Really is Java installed in every box; can a webdesigner assume ALL browser have Java enabled. The reason I ask is I want to implement some items on my sites which may be done with jaVA(AJAX) or with PHP (or both). Ideally I want my site viewable by anyone. Are there reliable stats on this???
From what I've been told JavaScript is not the same as the Java that one would have to install. So one can assume that Javascript is present on the computer, however it is not always enabled. So you should build your page with the assumption that some users will disable it, and thus not make it a requirement of your site's basic functions. PHP is rendered on the server side, so all the user ever sees is the resulting HTML, so you need not have any fear that any of your PHP code will be messed up by something not being enabled on the other person's browser, unless pasting in whatever html it would generate would also be messed up.